======================================
| [ 13.078919][ C3] #3: ffffffffb93794e0 (rcu_read_lock){....}-{1:3}, at: __is_insn_slot_addr (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 kernel/kprobes.c:299) 
| [ 13.079306][ C3] #4: ffffffffb93793c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   13.079696][    C3]
| [   13.079696][    C3] stack backtrace:
[   13.079981][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.079984][    C3] Call Trace:
[   13.079986][    C3]  <IRQ>
[ 13.079989][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 13.079997][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 13.080001][ C3] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 13.080008][ C3] mark_lock (kernel/locking/lockdep.c:4756) 
[ 13.080011][ C3] mark_usage (kernel/locking/lockdep.c:4645) 
[ 13.080014][ C3] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 13.080017][ C3] ? unwind_next_frame (./include/linux/rcupdate.h:874 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 13.080024][ C3] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 13.080031][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 13.080034][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 13.080038][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 13.080041][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 13.080043][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 13.080047][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 13.080051][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 13.080053][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 13.080056][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 13.080059][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 13.080068][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 13.080076][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:54 lib/ref_tracker.c:223) 
[ 13.080085][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 13.080088][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 13.080091][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 13.080096][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 13.080099][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 13.080102][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 13.080105][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 13.080112][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 13.080115][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 13.080118][ C3] ? handle_softirqs (kernel/softirq.c:580) 
[ 13.080123][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 13.080129][ C3] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 13.080133][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 13.080137][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 13.080142][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 13.080146][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 13.080149][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 13.080153][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 13.080157][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 13.080161][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 13.080163][ C3] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 13.080167][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 13.080173][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 13.080176][ C3] handle_softirqs (kernel/softirq.c:580) 
[ 13.080180][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 13.080183][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 13.080185][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   13.080189][    C3]  </IRQ>
[   13.080190][    C3]  <TASK>
[ 13.080192][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 13.080197][ C3] RIP: 0010:rcu_is_watching (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 13.080201][ C3] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 75 5c 48 03 1c ed 20 0e f0 b8 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 0f b6 14 02 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 24 8b 03 c1 e8 02
All code
========
   0:	48 89 fa             	mov    %rdi,%rdx
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   b:	75 5c                	jne    0x69
   d:	48 03 1c ed 20 0e f0 	add    -0x470ff1e0(,%rbp,8),%rbx
  14:	b8 
  15:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1c:	fc ff df 
  1f:	48 89 da             	mov    %rbx,%rdx
  22:	48 c1 ea 03          	shr    $0x3,%rdx
  26:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
  2a:*	48 89 d8             	mov    %rbx,%rax		<-- trapping instruction
  2d:	83 e0 07             	and    $0x7,%eax
  30:	83 c0 03             	add    $0x3,%eax
  33:	38 d0                	cmp    %dl,%al
  35:	7c 04                	jl     0x3b
  37:	84 d2                	test   %dl,%dl
  39:	75 24                	jne    0x5f
  3b:	8b 03                	mov    (%rbx),%eax
  3d:	c1 e8 02             	shr    $0x2,%eax

Code starting with the faulting instruction
===========================================
   0:	48 89 d8             	mov    %rbx,%rax
   3:	83 e0 07             	and    $0x7,%eax
   6:	83 c0 03             	add    $0x3,%eax
   9:	38 d0                	cmp    %dl,%al
   b:	7c 04                	jl     0x11
   d:	84 d2                	test   %dl,%dl
   f:	75 24                	jne    0x35
  11:	8b 03                	mov    (%rbx),%eax
  13:	c1 e8 02             	shr    $0x2,%eax
[   13.080203][    C3] RSP: 0018:ffffc90000727608 EFLAGS: 00000a02
[   13.080207][    C3] RAX: dffffc0000000000 RBX: ffff8880361b3810 RCX: 0000000000000001
[   13.080209][    C3] RDX: 0000000000000000 RSI: ffffffffb865a260 RDI: ffffffffb8f00e38
[   13.080211][    C3] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000001
[   13.080212][    C3] R10: 0000000000000000 R11: ffffffffb93794e0 R12: 00007ff2da830a47
[   13.080214][    C3] R13: 0000000000000000 R14: ffff88800a1045c0 R15: ffff88800a5043f8
[ 13.080219][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 13.080222][ C3] __is_insn_slot_addr (./include/linux/rcupdate.h:842 kernel/kprobes.c:299) 
[ 13.080226][ C3] kernel_text_address (kernel/extable.c:123 kernel/extable.c:94) 
[ 13.080232][ C3] __kernel_text_address (kernel/extable.c:79) 
[ 13.080235][ C3] unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 13.080239][ C3] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 13.080242][ C3] arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 13.080252][ C3] stack_trace_save (kernel/stacktrace.c:123) 
[ 13.080255][ C3] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 13.080260][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 13.080262][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 13.080266][ C3] set_track_prepare (mm/slub.c:936) 
[ 13.080271][ C3] ? kmem_cache_alloc_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4204) 
[ 13.080275][ C3] ? anon_vma_fork (mm/rmap.c:94 mm/rmap.c:360) 
[ 13.080278][ C3] ? dup_mmap (mm/mmap.c:1801) 
[ 13.080281][ C3] ? copy_mm (kernel/fork.c:1478 kernel/fork.c:1529) 
[ 13.080283][ C3] ? copy_process (kernel/fork.c:2169) 
[ 13.080286][ C3] ? kernel_clone (./include/linux/random.h:26 kernel/fork.c:2600) 
[ 13.080289][ C3] ? __do_sys_clone (kernel/fork.c:2731) 
[ 13.080291][ C3] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 13.080296][ C3] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 13.080300][ C3] ___slab_alloc (mm/slub.c:967 mm/slub.c:3849) 
[ 13.080303][ C3] ? anon_vma_fork (mm/rmap.c:94 mm/rmap.c:360) 
[ 13.080307][ C3] ? anon_vma_fork (mm/rmap.c:94 mm/rmap.c:360) 
[ 13.080309][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 13.080313][ C3] ? anon_vma_fork (mm/rmap.c:94 mm/rmap.c:360) 
[ 13.080315][ C3] kmem_cache_alloc_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4204) 
[ 13.080320][ C3] anon_vma_fork (mm/rmap.c:94 mm/rmap.c:360) 
[ 13.080324][ C3] dup_mmap (mm/mmap.c:1801) 
[ 13.080330][ C3] ? __pfx_dup_mmap (mm/mmap.c:1724) 
[ 13.080336][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 13.080341][ C3] copy_mm (kernel/fork.c:1478 kernel/fork.c:1529) 
[ 13.080344][ C3] copy_process (kernel/fork.c:2169) 
[ 13.080347][ C3] ? do_fault_around (mm/memory.c:5574) 
[ 13.080351][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 13.080356][ C3] ? __pfx_copy_process (kernel/fork.c:1918) 
[ 13.080359][ C3] ? handle_pte_fault (mm/memory.c:6089) 
[ 13.080362][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 13.080365][ C3] ? __pfx_handle_pte_fault (mm/memory.c:6046) 
[ 13.080369][ C3] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 13.080372][ C3] kernel_clone (./include/linux/random.h:26 kernel/fork.c:2600) 
[ 13.080376][ C3] ? __pfx_kernel_clone (kernel/fork.c:2559) 
[ 13.080378][ C3] ? __lock_release (kernel/locking/lockdep.c:5585) 
[ 13.080385][ C3] __do_sys_clone (kernel/fork.c:2731) 
[ 13.080388][ C3] ? __pfx___do_sys_clone (kernel/fork.c:2731) 
[ 13.080391][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 13.080398][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 13.080400][ C3] ? do_syscall_64 (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 ./include/linux/entry-common.h:199 arch/x86/entry/syscall_64.c:90) 
[ 13.080404][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 13.080407][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 13.080411][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   13.080414][    C3] RIP: 0033:0x7ff2da830a47
[ 13.080423][ C3] Code: Unable to access opcode bytes at 0x7ff2da830a1d.

Code starting with the faulting instruction
===========================================
[   13.080425][    C3] RSP: 002b:00007ffe53c0a578 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[   13.080427][    C3] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007ff2da830a47
[   13.080429][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[   13.080431][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: 00005578180e5990
[   13.080433][    C3] R10: 00007ff2d9db0e10 R11: 0000000000000246 R12: 0000000000000003


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock